Posted by Melanie on Thursday, September 20, 2012 at 5:41pm.
1) A physics book is moved once around the
perimeter of a table of dimensions 1 m by 3
m.
What is the distance traveled?
2) A window washer drops a brush from a scaf-
fold on a tall office building.
What is the speed of the falling brush after
2.7 s? (Neglect drag forces.) The acceleration
due to gravity is 9.8 m/s2 .
Answer in units of m/s
How far has it fallen in that time?
answer in units of m
3) With an average acceleration of −0.96 m/s2,
how long will it take a cyclist to bring a bicycle
with an initial speed of 14.8 m/s to a complete
stop?
Answer in units of s
4) A car traveling initially at +5.7 m/s acceler-
ates uniformly at the rate of +0.79 m/s2 for a
distance of 262 m.
What is its velocity at the end of the accel-
eration?
Answer in units of m/s
What is its velocity after it accelerates for 132
m?
Answer in units of m/s
What is its velocity after it accelerates for 65
m?
Answer in units of m/s
PLEASE give right answers + explain how you got it. Thanks!!
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